find all the values of a in the range 0 deg to 360 deg satisfying 2sina = 3cosa i know its simple but just cant remember how to do it
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do i just divide sin and cos for tan?
Hello djmccabie Originally Posted by djmccabie find all the values of a in the range 0 deg to 360 deg satisfying 2sina = 3cosa i know its simple but just cant remember how to do it Originally Posted by djmccabie do i just divide sin and cos for tan? Yes, you do, but remember that you must make sure that what you're dividing by is not zero. So you need to say: , provided Then check that does not give any valid solutions and proceed with Grandad
Originally Posted by djmccabie do i just divide sin and cos for tan? Hi dj, Yep, pretty much. Now, can you find the two angles that satisfy the original equation?
Last edited by masters; Apr 13th 2009 at 08:31 AM.
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